Washington State University Physicists create 'negative mass'

Washington State University physicists have created a fluid with negative mass, which is exactly what it sounds like. Push it, and unlike every physical object in the world we know, it doesn’t accelerate in the direction it was pushed. It accelerates backwards.

The phenomenon is rarely created in laboratory conditions and can be used to explore some of the more challenging concepts of the cosmos, said Michael Forbes, a WSU assistant professor of physics and astronomy and an affiliate assistant professor at the University of Washington. The research appears today in the journal Physical Review Letters, where it is featured as an “Editor’s Suggestion.”

Hypothetically, matter can have negative mass in the same sense that an electric charge can be either negative or positive. People rarely think in these terms, and our everyday world sees only the positive aspects of Isaac Newton’s Second Law of Motion, in which a force is equal to the mass of an object times its acceleration, or F=ma. In other words, if you push an object, it will accelerate in the direction you’re pushing it. Mass will accelerate in the direction of the force.

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Why does this galaxy spin so fast? 

To start, what kind of galaxy is this? It’s hard to tell.. It has dark dust lanes like a spiral galaxy but a large diffuse bulge of stars like a lenticular galaxy. 

Surprising observations show that UGC 12591 spins at about 480 km/sec, almost twice as fast as our Milky Way- the fastest rotation rate yet measured! The mass needed in order to hold a galaxy together that is spinning this fast is several times the mass of our Milky Way. Scenarios as to why this is happening with UGC 12591 include slow growth by accrediting ambient matter, or rapid growth through a recent galaxy collision or collisions. Future observations may be able to help us tell. 

The light we see today from UGC 12591 left about 400 million years ago, when trees were first developing on Earth!

Image Credit: NASA, ESA, Hubble

The Real Man of Steel

Pairing: Clark/Superman x Reader

Request:  Hi, Could you write a Superman smut? Like have it really fluffy at the start. Maybe that Clark is really awkward, so is reader. maybe that reader finds out that he is Superman in this? Maybe while they are having sex and his grip is too strong

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Words: 2673

Requests are open!

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